Machine for making cotter-pins.



Pat'ented Feb. 4, |902. N. W. KIRKPATBICK M. HENRY. MACHINE FOBLMAKIMGCUI-TER lP INS.

(Appumon mea Aug. 9,41901.)

5 sheets-5mt l.

(No Model?) we Nanms Pains co. PNoToAL'lTNo., wAsuxNGTcN, D. c,

Paten'fedy Feb. 4, |902.

5 Sheets-Sheet 2.

AUDRNE v No. 692,528.

N. W. KIRKPATRICK M. HENRY. `MACHINE FR MAKING CUTTER PINS.

(Application lfiled Aug. 9, 1901.) (No Model.)

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No. 692,528.` Patented Feb. 4, |902. N. W. KIHKPATRICK & M HENRY.

MACHINE FOB MAKING CUTTER PINS.

(Application led Aug. 9, 1901.)

(No Model.)

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TN: Nnnms PETERSmD., vnoouwo.. WASHWGTON, n. c.

Nn. 692,523. Patented Feb. 4, |902. l

N. .w. KmKPATmcK e. M. HENRY. MACHINE FOR MAKING CUTTER PINS.

v (Application ld Aug. 9, 191.) 'um Model.) 5 sheets-sheet 4.

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A @/ZWTR ATTUFN No. 692,528. Patented Feb. 4, |902.

N. W. KIBKPATBICK EL VM. HENRY'l MACHINE FOR MAKING GUTTER PINS.

(Application med Aug 9, 1901.) l gno Model.) 5 sheets-sheet s.

@MM 'n UNITED STATES- lPATENT OFFICE.Y

NATHANIEL NV. KIRKPATRIOK AND MICHAEL HENRY, OF DAYTON, OHIO.

MACHINE FOR MAKING GO-TTER-PINS.

S'ECIFICATION forming part of Letters Patent No. 692,528, datedFebruary4, 1902. p

Application filed August 9, 1901. SerialNo. 71,512. (No model.)

To a/ZZ whom t may concern,.-

. Be it known that we, NATHANIEL. W. KIRK- PATRICK and MICHAEL HENRY,citizens of the United States, residing at Dayton, inthe county ofMontgomery and State of Ohio,have invented certain new and usefulImprove- Vments in Machines for Making Cotter-Pins;

and we do declare the following to be a full, clear, and exactdescription of the invention, such as will enable others skilled in theart to which it appertains to make and use the saine, reference beinghad to the accompanying drawings, and to the lettersof reference markedthereon, which form a part of this specification.

This invention relates to improvements in machines for making@otter-pins, the novel features of which are hereinafter described andclaimed.

Preceding a detail description of the invention reference ismade to theaccompanying drawings, of which- Figure 1 is a top plan View of themachine. Fig. 2 is a side elevation. Figs. 3 and 3a are top plan viewsof the bending mechanism. Fig. 4 is a section on line emot Fig. 2. Fig.5 is an elevation of the pointing mechanism. Fig. 6 is a top plan viewof Fig. 5. Fig. 7 is a side elevation of the cutters. Fig. S is a bottomplan view of Fig. 7. Fig. 9 is a detail of a portion of the centeringdevices. Figs. lO, 11, and 12 are detail elevations ot' the cams; Fig.13, an enlarged sectional eleva-v tion of portions of the Cotter-formingmechanism; Fig. 14, a det-ail of a portion of the wire-feeding devices;Fig. 15, a view of a tinished cotter-pin. Fig. 16 is a sectional view ofan end portion of one of the reciprocating bars and a portion of thebase-plate beneath. Fig. 17 is a front end view of one of the reciprocating bars.

In the following detailed description of our invention similar referencecharacters will indicate corresponding parts as they appear in thedrawings.

A designates the base or table, upon which Vthe various mechanisms aresupported. Bis

the main driving-shaft of the 1nachine,which is mounted on said table inbearings B. C is a sleeve which is fastened to said shaft and from whichproject livecams, as follows: O', C', C", C, and 0". The two outer camsC C AVance, of the other cams.

are of `uniform shape, also the two inner cams C" C" are of similarshape, while the center cam C" has its own peculiar shape', as shown inFig. 1l. This cam 0" acts in adin bearings E E. (See Fig. 2.)

G G and G G designate four reciprocating bars-which are actuated by theyokes D' coming in contact therewith under the movements of the cams OC". of such bars are actuated in a uniform manner by the outer cams C'O', while the inner ones G' G' of such bars are actuated in a similarmanner by the cams O" and O. The inner bars G G' have'lugs G", whichlimit the movements thereof when actuatedu by the cams by coming incontact with stops d',which are secured to the top plate I". Secured tothe ends of the bars G GG G are contact lugs or projections a, which liein the paths of the yokes D and are therefore struck "by said yokes whenthe latter are driven forward by the cams. As seen in Figs. 3 and 3,these bars are mounted to slide upon the base-plate I and are inolosedby the top plate I, which is secured to said base-plate, as shown inFig. 1. y

Referring, further, to Figs.`3 and 3, it will be noted that the innerbars G G diverge or spread outwardly from the ends with which contact ismade. which lie on the outer sides of said bars G G'. These studsproject from the base-plate I and are in positions that permit of saidbars having the necessary spreading movements in the operations of themachine. y

D designates a sed d are two guide-studs- The outer ones G G Theouter-bars vG G occupy parallel positions and are capable oflongitudinal movemeut only. The outer sides of said bars are inclosed byguide-strips I', which are secured to the base-plate I. H designatescompressionsprings, the ends ot' which are secured to studs c,projecting from the inner sides of IOG said bars, and to studs c",projecting from the i base-plate. When the bars G G are. not under thecontrol of their cams C' C', as shown in Fig. 3, these springs byexpanding move said bars back to positions shown, which positions takeplace just before the operation of bending acotter-pin. The outer endsofthe bars G Gand G G have circular recesses G'", into which the headsof connecting-links J J lit, and whereby each inner bar G' is con nectedto the adjacent outer bar G.

It will be understood that as bars G G are advanced by their respectivecams the outer ends of the bars G' G' will be moved toward each otherfrom the positions shown in Fig. 3 to the position shown in Fig. 3through the instrumentality ot the links J J. During these movements ofsaid bars the said links are necessarily permitted to turn in theopenings G"' in both bars.

l-I is a clamping-bar which has reciprocating movement similar to bars GG'. This bar H occupies a position between the bars G' G. The front endthereof is rounded out, as at 71 Fig. 3, andthe function of said bar isto hold the pieces ofwire e", from which the pins are formed, againstthe pin e while the formers c' press the said wire in and around the pine,

as in Fig. 3, and thus forms the cotter, as

shown in Fig. l5. The clamping-bar H is actuated by cam C'" and thecenter roller D. (See Fig. l.) Vhen not under the control of said cam,the said bar is under the control of a spring b, one end of which isattached to a stud b', projecting from said bar, and the other end ofsaid spring being seated against a shoulder formed by the recess in thebaseplate I, in which said spring b is placed. (See Fig. 2.)

The formers c', as shown in Fig. 17, are secured to the ends of theinner bars G' G', and the surfaces thereof which grasp the Wire e" haverounded recesses c", that receive the rounded sides of the wire when thebars G' G are moved in by the bars G G andthe links J. rl`he outer barsG G have only one movement-namely, a longitudinal reciprocatingmovementwhile the inner bars G' G' have in addition to such movement aninward movement, which is due to the link connections with bars G G. Thelongitudinal movements of said bars G' G' advance them to a position tobend the Wire around the pin e when the inward movements of said barstake place. The bars G' G' are returned, to the normal positions, as inFig. 3, by the expansion-springs H andthelink connectionsJ. Owing to thecams C" C" having necessarily a greater extent of moving surface, thebars G' G' are actuated first, and as said bars are about to reach thepositions to grasp the wire on e'ach side of the pin c the bars G Gareadvanced by cams C' C', and the result is the cot-ter-pin is formed asin Fig. 3% The formers c', as shownin Fig. 17, as before stated, aresecured to the ends of the bars G G', and the surfaces thereof whichengage with the wire are provided with rounded recesses c", whichreceive the rounded or outer sides ofthe wire.

K is a block secured to the top plate I and having a guide-opening inone end through which the pin c passes.

K is a rocker-arm to which the pin e is secured. The end of said arm isprovided with an opening which receives a coll-arf, through which thepin c passes and which is made secure to said pin e by a screw f. (SeeFig. 2.) When the pin e is in a position to enable the clamping-bar Hand the formers c' to perform their functions, the said pin has enteredthe die e. (See Figs. 3 and 4.) The pineis given the necessary movementsthrough the rockerarm K', which is fulcrumed at K", and is heldnormallyin a position With the pin c out oi' the die by means of aspring L', which is connected to the end of said arm and the table. Thesaid arm is actuated at predetermined periods to lower the pin into thedie by means ot`a roller L, which is mounted thereon in the path of thecam C'". (See Figs.4 l and 2.) Centering devices, by means ot' whicheach piece of wire after it is cut assumes a proper position to enablethe pin e to occupy a position in the center thereof, will now bedescribed. (See Figs. 3, 3, 4E, 9, and 1G.)

ggdesignate two bars which lie in recesses g3 in the upper side ot thebase-plate I. The inner ends of these bars have studs g, whichentertransverse slots gG in the under side of the bars J', and therebythe said bars g are given movement by the bars G G from the positionsshown in Fig. 3 to the positions shown in Fig. 3, the transverse slots.9 permitting the spreading movements of said bars G' G' Withoutimparting to the bars g similar movements.

g' designates bars lying at right angles to the bars g and lixed theretoat a". Secured to the Alast-named bars are third bars g", Which areadjustable in their attachment with the pieces g' in adapting saiddevices to center stock or wire for different sizes ot' cotters. Thebars g" have upturned ends z', which inclose the ends of the stock orpieces ol wire e", from which the Cotter-pins are formed. (See Figs. 3and 4..)

Ve will next describe the Wire feeding and cutting mechanism. (See Figs.l and Ll.) P designates a reciprocating plate or carriage which moves ina slot P" in a plate P', secured to the table A. This plate carries aWire-gripper consisting of a dog R, pivoted to an arm R', projectingfrom said plate, said dog being held in engagement With the wire by aspring R. Reciprocating movement is imparted to the plate P through aconnectingrod S, which is pivotally connected toa Wristpin S',projecting from said plate. The rod S is driven from a shaft U throughintervening adjustable crank connections (shown in Figs. l, 4, and 14:)and consisting ot' a casing T, having a boss T", with which the shaft Uis rigidly connected. The casing T incloses an adjustable piece S", withwhich one end of the connecting-rod S is pivotally connected. Theposition of the connecting-piece S" ICO IIO

within the casing' T may be varied by'the adj listing-screw T', whichpasses through said connecting-piece, and thereby the movement of thecarriage or feed-plate P 'may be regulated as desired. The shaft U isdriven from the main shaft B through miter-gear's F and U'. The feed ofthe wire to a proper position is limited by a gage-plate p, with whichthe end of the wire abutswhen fed'into position, as shown by the brokenlines which represent the wire in Fig. 4:. This gage-plate has anadjustable connection 4with a bolt'pf, which is mounted on the top'plate I" and is inclosed by a cover. (Broken awa'y in Fig. l.) The boltp is held normally out by a spring 19 and is moved tea `properpositionto stop the wire at the proper length-for a pin by a boltq, which has acam-surface t', thatrenters a recess q in the sideof bolt p', andthereby moves said vbolt p( against the spring 19'". Bolt-q is mountedon the top plate 1" ina manner similar to bolt p and is held out ofengagement with bolt p by a coil-spring'q", which surrounds the exposedportion ofsaid bolt q. At predetermined times in the movelnent of camC', which is the eXtreme left'o'am in Fig. 4l, the yoke D makes contactwith the end of bolt q and drives said bolt into engagement with boltp'.as the end ofl the wire e abuts with the gageplateo. The wireis shown inFig. 4in broken lines in Vsuch position. When the wireis vfed into thisposition each time by the feed-plate P, the gage-plate 1) is moved up tothe proper point to stop it by thebolt q.' After the wire is thusstopped or gaged the bolt q moves out of engagement with bolt p and thespringp" moves the gage-plate out again, and thus the wire is permittedto drop between the centering-pieces t' i' and behind the pin e, asshown in Fig. 4. Immediately as-the wire is fed up to the gage-plate@itis cut off, and'each piece is permitted to drop, as above indicated.

The Wire-cutting devices are shown in detail-in Figs. 7 and 8and-'consist oftwo members-to wit, a holder M'and a cutter M. The formerhas a horizontal opening m, through which the wire isz passed, and thecutter M has a knife-edge m', against which the wire ismoved and severedin the movement of the holder M. The cutting member M is underthecontrol of the wire-holding member M through the medium of anexpansion-spring m", 'Whichis confined between the end of the saidcutting member and a lug m", that projects from member M. lThesewire-cutting devices are arranged side by side in a housing M, which isadjustably mounted on the top4 plate l". The positions-ot said housing,

together with vthe cutting devices, may be adjusted laterally on the topplate I". These adjustments are obtainable by'means of` cross-lugs n ai,projecting from the bottom of the housing M", which Vtit in transverseslots 'r1/'fn' in the upper side of the top plate I".

When moved to thedesired position the hous- This takes place j ust ingM" is secured by a bolt 1"', which 'passes through the housing 'andinto` thetop plate.

' The wire-cutting devices Vare actuated: by the'following means:As'will be seenfrom Fig. l, the Wire-holding bar M projects outy of therear end of the housing in a position to 'beopera'ted' by alever N. Thisleveris fulcrnmed'at N on the topplate I" and projects in the pathof astud N",the said'stud being on a reciprocatingv piece'O, which'isinclosed in a VguideN. said'piece O'carries a roller 0', which isactuatedby cam F on the main drivin, .r=`;haft.

It will be seen from Fig. 15 tli'at the yn- The exposed' endA of i ishedcotter-pin has its end beveled off. This pin has been vis moved up tothe positionshownin Fig. 3i.

s s are two knives which are projected into said head,fromloppositesidesand just inthe rear ofthe opening r. The'inn'er o'r cutting ends ofthese blades aretapered, asjatis, whereby the tapering cut is givenvtheendof the @otter-pin. lThe cuttings falli from s 'aid head throughtheopening r" therein. Rotary movement may be imparted 'to the headthrough the pulley t and other common power-transmission appliances.(Not shown.) The longitudinal reciprocating moven'lenthis imparted tomove the'headback and forth from position shown in Fig. 3% by thefollowing devices, (see Fig. 1:) w designates fan arm` projecting fromone sideof the standard u. w is a'reciprocating rod, oneend f which is'connected to said arm and the other endof which passes through ag'uide'Ef, which lies below the main driving-shaft.v `As`hereinbe` forestated, this guide Ef also forms a bearing for one end of shaft D". Theertreme end w" of said rod fu) projectsupwardly, as shown in brokenlines in Fig. 2, and lies ina position to be struck by a cam F onmainshaft B.

The'machine is timedto operate as follows: Power being transmitted tothe main shaft, the feed -'plate P, `being geared thereto, vis under aconstant reciprocating movement. As the wire isvbeing fed in'each timethe gage-plate p is moved in to the proper e tent by theactuatingbolt qto gage the feed of Wire. The wire is then cut byv theoperationotthewire-holding bar M through lever N. Simultaneously withl the cuttingoperation the gage-plate p is moved out by. the spring p" and the pineis lowered into the die e. The cut wire then falls to the posi- ICO IIO

tion between the centering devices 1I t' and behind the pin c, as inFig. 4. Vhen the cut piece of wire has reached this position, theclamping-bar I-I moves the end 71, against the wire and partially bendsit around the pin e. Simultaneously with this movement of bar H the barsG G are advanced to a proper position for the formers c to engage thewire on each side of the pin e. `At this moment the bars G G areadvanced, and through the links .I .I the bars G G are moved inwardly,and the formers c' complete the formation of the cotter-pin around thepin e, as shown in Fig. 3, The centering devices g g' are moved out bythe bars G' G.' When the pin is thus formed, the head r is moved to aposition to receive the end of said pin, and the operation of taperingsaid end is then completed.

Having described ourinvention, we claim- 1. In-a machine for makingCotter-pins, the combination with wire-feeding mechanism, and wirecutting mechanism, of a pin or former, means for moving said pin orformer to a position to form a cotter-pin, alongitudinally-reciprocating clamping and initialbending bar adapted toclamp the wire against said pin and to initially bend said wire, alongitudinally-reciprocatingbending-barlocated on each side of saidclamping-bar in parallel relation thereto, means for imparting thenecessary movements to said bending-bars to engage the wire on each sideof the pin after said wire has received its initial bend from theclamping-bar, and means for moving said bending-bars inwardly at theirbending ends to complete the formation of the Cotter-pin, substantiallyas speciied.

2. In a machine for making Cotter-pins, the combination withwire-feeding mechanism, of a vertically-reciprocating pin in the rear ofwhich, wire is fed, a Iongitudinally-reciprocating clamping-bar adaptedto hold said wire against the pin, the said clamping-bar having itsengaging end recessed to form the initial bend in the wire, alongitudinally-reciprocating bending-bar located on each side of saidclampingbar in parallel relation thereto, means for impartinglongitudinal movement to said bending-bars during which the wire isengaged and is carried around the sides of the pin, and means for movingthe bending ends of said bending-bars inwardly after the wire has beencarried around the sides of the pin, and whereby the formation of thecotterpin is completed.

3. In a machine for making Cotter-pins, the combination of a pin orformer around which the Cotter-pins are formed, means for lowering andraising said pin or former at predetermined times, a clamping-baradapted to clamp the stock against said pin or former and to give theinitial bend to said stock, inner reciprocating bars adjacent to saidclamping-bar, outer reciprocating bars, and connections between saidinner and outer reciprocating bars whereby the inner bars are giveninward movements from the longitudinal movements of the outer bars, andmeans on said inner reciprocating bars for engaging with the stockduring said inward movements to impart the final bend thereto whichcompletes the formation of the Cotter-pins.

4:. In a machine for making Cotter-pins, the combination with stock orwire feeding mechanism, of a pin or former, in the rear of which the'stock or wire is fed, means for lowering and raising said pin or formerat predetermined times, a clamping-bar adapted to press the stock orwire against said pin or former and to initially bend said stock orwire, inner reciprocating bars adjacent to said clampingbar, outerreciprocating bars, link connections between the outer reciprocatingbars and the inner reciprocating bars whereby inward and outwardmovements are imparted to the inner reciprocating bars from thelongitudinal movements of said outer bars, and means on said inner barsfor engaging with the wire or stock on each side of the pin or former toimpart thereto the final bending in the formation of @otter-pins.

5. In a machine for making Cotter-pins, the combination withwire-feeding mechanism, a gage to limit the feed of said wire to therequired extent, and cutters for cutting said wire in pieces of thenecessary length, of a pin or former in the rear of which the severedpieces of wire find lodgment, means for lowering said pin or formerprior to the operation of cutting each piece of wire and for raisingsaid pin or former after each complete operation of forming aCotter-pin, a clamping-bar adapted to clamp each piece of wire againstthe pin or former and to give the initial bend thereto, a plurality ofbars in parallel relation and all of which havelongitudinally-reciprocating movements, and two of which have inaddition to such movements, movements toward and from each other, thelastnamed movements being imparted from the bars having thelongitudinally-reeiprocating movements only, and means for impartingsuch movements to said bars.

6. In a machine for making Cotter-pins, the combination withwire-feeding and wire-cutting mechanisms, of a pin or former, means formoving said pin or former to a position to form a Cotter-pin, alongitudinally-reciprocating clamping-bar adapted to clamp the wirearound the pin' or former and to initially bend saidwire,alongitudinally-reciprocatingbending-bar on each side of theclamping-bar in parallel relation therewith, outerlongitudinally-reciprocating bars,and link connections between saidbending-bars and said outer bars whereby the bending-bars are movedinwardly at the completion of their longitudinal movements to completethe formation of the Cotter-pin, means for imparting the necessarymovements to said bending or clamping bars, and means for pointing theends of the cotter-pins before they are delivered from the pin orformer.

lOO

ICS

IIO

7. In a machine for making Cotter-pin s, the combination with wirefeeding and cutting mechanisms, and devices for gaging each feed ofwire, of a pin or former, means for moving said'pin or former to aposition to form a cotter-pin and to subsequently deliver said cottheadjacent bending-bars by means of which the said bending-bars are giveninward movements to complete the formation of a cotterpin, and means forsimultaneously imparting movements to the 'clamping-bar, the bendingbarsand said outer bars.

In testimony whereof we affix our signazo tures in presence'of twowitnesses.

N ATHANIEL WV. KIRK PATRICK. MICHAEL HENRY.` Witnesses:

' R. J .YMCCARTL C; M. THEOBALD.

